RT info:eu-repo/semantics/article
T1 Electromagnetic field enhancement effects in group IV semiconductor nanowires. A Raman spectroscopy approach
A1 Pura Ruiz, José Luis
A1 Anaya, Julián
A1 Souto Bartolomé, Jorge Manuel
A1 Prieto Colorado, Ángel Carmelo
A1 Rodríguez, A.
A1 Rodríguez, Tomás
A1 Periwal, Priyanka
A1 Baron, Thierry
A1 Jiménez López, Juan Ignacio
AB Semiconductor nanowires (NWs) are the building blocks of future nanoelectronic devices.Furthermore, their large refractive index and reduced dimension make them suitable fornanophotonics. The study of the interaction between nanowires and visible light reveals resonances that promise light absorption/scattering engineering for photonic applications. Micro-Raman spectroscopy has been used as a characterization tool for semiconductor nanowires. The light/nanowire interaction can be experimentally assessed through the micro-Raman spectra of individual nanowires. As compared to both metallic and dielectric nanowires, semiconductor nanowires add additional tools for photon engineering. In particular, one can grow heterostructured nanowires, both axial and radial, and also one could modulate the doping level and the surface condition among other factors than can affect the light/NW interaction. We present herein a study of the optical response of group IV semiconductor nanowires to visible photons. The study is experimentally carried out through micro-Raman spectroscopy of different group IV nanowires, both homogeneous and axially heterostructured (SiGe/Si). The results are analyzed in terms of the electromagnetic modelling of the light/nanowire interaction using finite element methods. The presence of axial  heterostructures is shown to produce electromagnetic resonances promising new photon engineering capabilities of semiconductor nanowires.
PB AIP Publishing.
YR 2018
FD 2018
LK http://uvadoc.uva.es/handle/10324/31327
UL http://uvadoc.uva.es/handle/10324/31327
LA eng
NO Journal of Applied Physics 123, 114302 (2018)
DS UVaDOC
RD 19-abr-2024